CN208500698U - A kind of domestic sewage processing system - Google Patents
A kind of domestic sewage processing system Download PDFInfo
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- CN208500698U CN208500698U CN201821111239.6U CN201821111239U CN208500698U CN 208500698 U CN208500698 U CN 208500698U CN 201821111239 U CN201821111239 U CN 201821111239U CN 208500698 U CN208500698 U CN 208500698U
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Abstract
The utility model relates to a kind of domestic sewage processing systems, belong to technical field of sewage.Including grid, aerated grit chamber, anoxic pond, aerobic tank and secondary settling tank, the aerated grit chamber has inlet port and outlet port, urban pipe network is connected through the feed inlet of grid and aerated grit chamber, the discharging pipeline of the aerated grit chamber is equipped with branch, branch I is connected to the feed inlet of the anoxic pond, and branch II is connected to external biogas residue processing system through biogas residue feed-line；The discharge port of the anoxic pond and the feed inlet of aerobic tank connect, and the discharging pipeline of the aerobic tank is equipped with branch, and the first branch is connected to secondary settling tank, second branch return is to anoxic pond, the discharging pipeline of the secondary settling tank is equipped with branch, and branch one is connected to fosse, and branch two is back to anoxic pond.This process flow has many advantages, such as that high-efficient, anoxic denitrification process is strong to pollutant degradation efficiency with higher, volumetric loading height, anoxic/aerobic process resistance to overload shock ability.
Description
Technical field
The utility model relates to a kind of domestic sewage processing systems, belong to technical field of sewage.
Background technique
Wastewater treatment in China industry development progress is later, before arriving reform and opening-up since the establishment of the nation, the demand of wastewater treatment in China
Mainly based on industry and the use of national defence tip.After reform and opening-up, the fast development of national economy, living standards of the people are shown
It writes and improves, pulled the demand of sewage treatment.Into after nineteen nineties, wastewater treatment in China industry entry is quickly sent out
The speedup in the duration of an exhibition, sewage treatment demand is horizontal much higher than the whole world.
Modern sewage processing technique is divided by degree for the treatment of, can be divided into level-one, second level and tertiary treatment.Coagulation: main
The solid pollution substance in sewage in suspended state is removed, physical treatment process largely can be only done the requirement of coagulation.
By the sewage of coagulation, BOD generally can remove 30% or so, discharge standard be not achieved.Coagulation belongs to two stage treatment
Pretreatment.Two stage treatment: being in the organic pollution materials (BOD, COD substance) of colloid and dissolved state in main removal sewage,
Removal rate makes organic pollutant reach discharge standard up to 90% or more.Tertiary treatment: it is further processed difficult to degrade organic
Object, nitrogen and phosphorus etc. can result in the soluble inorganic matter etc. of water eutrophication.Main method has biological carbon and phosphorous removal method, coagulation
The precipitation method, sand coarse aggregate ratio method, active carbon adsorption, ion-exchange and electric osmose analytic approach etc..
Utility model content
In view of the foregoing defects the prior art has, the utility model proposes a kind of domestic sewage processing systems.
The utility model, which is that the following technical solution is employed, to be realized:
A kind of domestic sewage processing system, including grid, aerated grit chamber, anoxic pond, aerobic tank and secondary settling tank, the exposure
Gas setting pot has inlet port and outlet port, and urban pipe network is connected through the feed inlet of grid and aerated grit chamber, and the aeration is heavy
The discharging pipeline in sand pond is equipped with branch, and branch I is connected to the feed inlet of the anoxic pond, and branch II connects through biogas residue feed-line
To external biogas residue processing system；The discharge port of the anoxic pond and the feed inlet of aerobic tank connect, the discharge nozzle of the aerobic tank
Line is equipped with branch, and the first branch is connected to secondary settling tank, and the discharging pipeline of the second branch return to anoxic pond, the secondary settling tank is equipped with
Branch, branch one are connected to fosse, and branch two is back to anoxic pond.
Further, the grid be coarse rack and fine fack, urban pipe network through coarse rack, inlet pumping station, fine fack with
The feed inlet of aerated grit chamber connects.
Further, the coarse rack and fine fack are connect through biogas residue feed-line with external biogas residue processing system.
It further, further include disinfection by ultraviolet light pond and V-type sedimentation basin, the discharging pipeline of the secondary settling tank is equipped with branch,
Branch is connected to fosse once disinfection by ultraviolet light pond and V-type sedimentation basin.
Further, the discharging pipeline of the secondary settling tank is equipped with branch, and branch two is back to anoxic pond through sludge pump house.
Further, the also concentrated pond of the sludge pump house and mud storage pool are connected to sludge thickening dehydrator room.
It further, further include primary sedimentation tank, the discharging pipeline of the aerated grit chamber is equipped with branch, and branch I is through primary sedimentation tank
It is connected to the feed inlet of the anoxic pond.
Further, the primary sedimentation tank is connect with the mud storage pool.
Compared with prior art, the utility model has the beneficial effects that
(1) high-efficient: the technique has higher removal effect to the organic matter in waste water, ammonia nitrogen etc..When total stop
Between be greater than 54h, COD value can be down to 100mg/L hereinafter, other indexs using coagulating sedimentation by the water outlet after biological denitrificaion
Also reach discharge standard, nitrogen removal rate is 70% or more.
(2) process is simple, with low investment, and operating cost is low: the technique is using the organic matter in waste water as denitrifying carbon
Source, therefore do not need the carbon source for separately adding methanol etc. expensive again.In particular, after the device that ammonia still is provided with de- fixed ammonia, carbon-nitrogen ratio
It increases, the basicity generated in denitrification process correspondingly reduces the alkaline consumption of nitrifying process needs.
(3) anoxic denitrification process is to pollutant degradation efficiency with higher: if COD, BOD5 and SCN- are in anoxic section
Middle removal rate is 67%, 38%, 59%, and the removal rate of phenol and organic matter is respectively 62% and 36%, therefore anti-nitration reaction is most
For economic energy-saving degradation process.
(4) volumetric loading is high: strengthening biochemistry since the nitrification stage uses, the denitrification stage uses high concentration sludge again
Membrane technology, effectively improve nitrification and denitrifying sludge concentration, compared with external similar technique, volume with higher
Load.
(5) anoxic/aerobic process resistance to overload shock ability is strong: when the larger or pollutant concentration of influent quality fluctuation is higher
When, this technique can maintain to operate normally, therefore operational administrative is also very simple.By the comparison of the above process, it is not difficult to find out that, biology
Denitrification process inherently denitrogenation while, also degrade phenol, cyanogen, the organic matters such as COD.
Detailed description of the invention
Fig. 1 is the utility model process flow diagram；
Wherein, the above drawings include the following reference numerals: 1, aerated grit chamber；2, anoxic pond；3, aerobic tank；4, two is heavy
Pond；5, coarse rack；6, fine fack；7, inlet pumping station；8, disinfection by ultraviolet light pond；9, V-type sedimentation basin；10, sludge pump house；11, dense
Contracting pond；12, mud storage pool；13, sludge thickening dehydrator room；14, primary sedimentation tank.
Specific embodiment
In order to which the utility model aim, technical solution is more clearly understood, below by embodiment, to the utility model
It is described in further detail.
Embodiment one:
A kind of domestic sewage processing system, including grid, aerated grit chamber 1, anoxic pond 2, aerobic tank 3, secondary settling tank 4, purple
Outside line sterilization pool 8, V-type sedimentation basin 9 and primary sedimentation tank 14, the grid are coarse rack 5 and fine fack 6, and the aerated grit chamber 1 has
There are inlet port and outlet port, urban pipe network connects through the feed inlet of coarse rack 5, inlet pumping station 7, fine fack 6 and aerated grit chamber 1
It connects, the discharging pipeline of the aerated grit chamber 1 is equipped with branch, and branch I is connected to the charging of the anoxic pond 2 through primary sedimentation tank 14
Mouthful, branch II is connected to external biogas residue processing system through biogas residue feed-line, and the coarse rack 5 and fine fack 6 are defeated through biogas residue
Pipeline is sent to connect with external biogas residue processing system；The discharge port of the anoxic pond 2 is connect with the feed inlet of aerobic tank 3, described good
The discharging pipeline in oxygen pond 3 is equipped with branch, and the first branch is connected to secondary settling tank 4, and the second branch return to anoxic pond 2, described two is heavy
The discharging pipeline in pond 4 is equipped with branch, and branch is connected to fosse once disinfection by ultraviolet light pond 8 and V-type sedimentation basin 9, and branch two is through dirt
Dredge pump room 10 is back to anoxic pond 2.The also concentrated pond 11 of the sludge pump house 10 and mud storage pool 12 are connected to sludge concentration and dewatering
Computer room 13.The primary sedimentation tank 14 is connect with the mud storage pool 12.
Sewage flows into setting pot after grid retains bulky grain dirt, and setting pot selects aeration type, and passes through aeration stirring
Prevent dirt from depositing.Setting pot rear portion sets anoxic pond 2, and Aerobic Process for Treatment selects two-stage biological to touch oxidation.Biology touches oxidation
Most important part in process flow, many organic matters are herein by bacterium aerobic degradation.Multistage subsection formula is selected to touch oxidation,
Load step by step is constituted to successively decrease system, make to touch oxidation removal rate, anti-shock loading, in terms of have more advantage and can
By property.Biology touches oxidation water outlet using filtering, disinfection, and advanced treating Treated sewage reusing can be completed.
In order to reach emission request, treatment process is two stage treatment method A/O technique, and A/O technique is by anoxic pond 2 and aerobic tank
3 are connected in series, and can obtain good denitrification effect while removing organic matter.That is: sewage is first introduced into anoxic pond 2, returned
Flow denitrifying bacterium in sludge with the organic matter in raw sewage as carbon source, by the nitrate-nitrogen reduction in backflow mixed liquor at
Nitrogen；Sewage subsequently enters aerobic tank 3, and most of organic matter obtains digestion degradation herein, secondary settling tank 4, part is arranged after aerobic tank 3
Mixed liquor in aerobic tank 3 with well-off microorganism, while being back to anoxic pond 2, with true to anoxic pond 2 by sludge reflux
Protecting anoxic pond 2 has sufficient nitrate.
Anoxic pond 2 is upflow sludge bed reactor, and hydraulic detention time is 2-4 hours, and bottom of pond is Sludge Bed, Sludge Bed
With a thickness of 1-1.2m, system of intaking is resistance cloth aqueous systems in pulse water-feeding, and bottom sets water distributor, and sludge is in suspending when operation.
Aerobic tank 3 be with the aerobic microbiological in sewage existing for the free oxygen under the conditions of, in digestion, degradation sewage
Organic matter, aerobic tank 3 is to touch oxidation pond, equipped with filler in pond, the sewage submerged carriers that will be oxygenated, and with certain flow velocity
Flow through filler.Microorganism a part is bonded to filler surface with biomembrane, and a part is suspended in water with cotton-shaped.Touch oxidation pond
The oxygen that middle Institute of Micro-biology needs is supplied by artificial aeration, and after biomembrane grows to certain thickness, the microorganism of nearly filler wall is because lack
Oxygen and carry out anaerobic metabolism, the scouring effect composition part biofilm detachment that the gas of generation and aeration are constituted promotes new life
The growth of object film constitutes weeding out the old and bring forth the new for biology.The biomembrane fallen enters subsequent secondary settling tank 4 with water outlet.
The above is only the preferred embodiment of the present invention and oneself, not with the utility model be limitation, it is all this
Made impartial modifications, equivalent substitutions and improvements etc., should be included in the utility model within the spirit and principle of utility model
Patent covering scope in.
Claims (8)
1. a kind of domestic sewage processing system, which is characterized in that including grid, aerated grit chamber (1), anoxic pond (2), aerobic tank
(3) and secondary settling tank (4), the aerated grit chamber (1) have inlet port and outlet port, and urban pipe network is through grid and aerated grit chamber
(1) feed inlet connection, the discharging pipeline of the aerated grit chamber (1) are equipped with branch, and branch I is connected to the anoxic pond (2)
Feed inlet, branch II is connected to external biogas residue processing system through biogas residue feed-line；The discharge port of the anoxic pond (2) with it is good
The feed inlet in oxygen pond (3) connects, and the discharging pipeline of the aerobic tank (3) is equipped with branch, and the first branch is connected to secondary settling tank (4),
Second branch return to anoxic pond (2), the discharging pipeline of the secondary settling tank (4) is equipped with branch, and branch one is connected to fosse, branch
Two are back to anoxic pond (2).
2. domestic sewage processing system according to claim 1, which is characterized in that the grid is coarse rack (5) and thin
Grid (6), urban pipe network are connect through coarse rack (5), inlet pumping station (7), fine fack (6) with the feed inlet of aerated grit chamber (1).
3. domestic sewage processing system according to claim 2, which is characterized in that the coarse rack (5) and fine fack (6)
It is connect through biogas residue feed-line with external biogas residue processing system.
4. domestic sewage processing system according to claim 1, which is characterized in that further include disinfection by ultraviolet light pond (8) and V
Type sedimentation basin (9), the discharging pipeline of the secondary settling tank (4) are equipped with branch, and branch is precipitated once disinfection by ultraviolet light pond (8) and V-type
Pond (9) is connected to fosse.
5. domestic sewage processing system according to claim 1, which is characterized in that the discharging pipeline of the secondary settling tank (4)
Equipped with branch, branch two is back to anoxic pond (2) through sludge pump house (10).
6. domestic sewage processing system according to claim 5, which is characterized in that the sludge pump house (10) is also concentrated
Pond (11) and mud storage pool (12) are connected to sludge thickening dehydrator room (13).
7. domestic sewage processing system according to claim 6, which is characterized in that further include primary sedimentation tank (14), the exposure
The discharging pipeline of gas setting pot (1) is equipped with branch, and branch I is connected to the feed inlet of the anoxic pond (2) through primary sedimentation tank (14).
8. domestic sewage processing system according to claim 7, which is characterized in that the primary sedimentation tank (14) and the storage mud
Pond (12) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111239.6U CN208500698U (en) | 2018-07-13 | 2018-07-13 | A kind of domestic sewage processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111239.6U CN208500698U (en) | 2018-07-13 | 2018-07-13 | A kind of domestic sewage processing system |
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| CN208500698U true CN208500698U (en) | 2019-02-15 |
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| CN201821111239.6U Active CN208500698U (en) | 2018-07-13 | 2018-07-13 | A kind of domestic sewage processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282821A (en) * | 2019-06-25 | 2019-09-27 | 南京传业环保科技有限公司 | A kind of efficient process system for municipal sewage |
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2018
- 2018-07-13 CN CN201821111239.6U patent/CN208500698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282821A (en) * | 2019-06-25 | 2019-09-27 | 南京传业环保科技有限公司 | A kind of efficient process system for municipal sewage |
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